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Open AccessJournal ArticleDOI

Shock location and CME 3D reconstruction of a solar type II radio burst with LOFAR

Pietro Zucca, +74 more
TLDR
In this article, the authors studied a coronal shock associated with a CME and type II radio burst to determine the locations at which the radio emission is generated, and investigated the origin of the band-splitting phenomenon.
Abstract
Type II radio bursts are evidence of shocks in the solar atmosphere and inner heliosphere that emit radio waves ranging from sub-meter to kilometer lengths. These shocks may be associated with CMEs and reach speeds higher than the local magnetosonic speed. Radio imaging of decameter wavelengths (20-90 MHz) is now possible with LOFAR, opening a new radio window in which to study coronal shocks that leave the inner solar corona and enter the interplanetary medium and to understand their association with CMEs. To this end, we study a coronal shock associated with a CME and type II radio burst to determine the locations at which the radio emission is generated, and we investigate the origin of the band-splitting phenomenon.

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Citations
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Journal ArticleDOI

CME-driven Shock and Type II Solar Radio Burst Band Splitting

TL;DR: In this article, a detailed imaging and spectroscopic observation of a CME-driven shock producing band splitting in a Type II burst is presented, which is consistent with radio-wave scattering of plasma radio emission from a single region, implying that the split-band Type II sources could originate from nearly cospatial locations.
Journal ArticleDOI

ICME Evolution in the Inner Heliosphere

TL;DR: In this paper, the authors provide an updated synthesis of research results in this still active area of heliophysics at the dawn of the Parker Solar Probe (PSP) and Solar Orbiter (SO) mission era.
Journal ArticleDOI

Geometry, Kinematics, and Heliospheric Impact of a Large CME-driven Shock in 2017 September

TL;DR: In this article, the authors obtained new insights concerning the geometry and kinematics of CME-driven shocks in relation to their heliospheric impacts from the optimal, multi-spacecraft observations of the eruption.
Journal ArticleDOI

Radio Observations of Coronal Mass Ejections: Space Weather Aspects

TL;DR: In this article, the role of radio observations in predicting or presaging an eruption, in capturing the formation stages of the CME, and in following the evolution in the corona and heliosphere is discussed.
References
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Journal ArticleDOI

The Large Angle Spectroscopic Coronagraph (LASCO): Visible light coronal imaging and spectroscopy

TL;DR: The Large Angle Spectroscopic Coronagraph (LASCO) is a triple coronagraph being jointly developed for the Solar and Heliospheric Observatory (SOHO) mission as discussed by the authors.
Book ChapterDOI

The Large Angle Spectroscopic Coronagraph (LASCO)

TL;DR: The Large Angle Spectroscopic Coronagraph (LASCO) is a three coronagraph package which has been jointly developed for the Solar and Heliospheric Observatory (SOHO) mission by the Naval Research Laboratory (USA), the Laboratoire d'Astronomie Spatiale (France), the Max-Planck-Institut fur Aeronomie (Germany), and the University of Birmingham (UK) as discussed by the authors.
Journal ArticleDOI

The STEREO Mission: An Introduction

TL;DR: The twin STEREO spacecraft were launched on October 26, 2006, at 00:52 UT from Kennedy Space Center aboard a Delta 7925 launch vehicle to understand the causes and mechanisms of coronal mass ejection (CME) initiation and follow the propagation of CMEs through the inner heliosphere to Earth as mentioned in this paper.
Journal ArticleDOI

The Murchison widefield array: The square kilometre array precursor at low radio frequencies

TL;DR: The Murchison Widefield Array (MWA) as discussed by the authors is one of three Square Kilometre Array Precursor telescopes and is located at the MUR-astronomy Observatory in Western Australia, a location chosen for its extremely low levels of radio frequency interference.
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